CN105335027B - Capacitance type touch-control structure and capacitive touch screen and preparation method thereof - Google Patents
Capacitance type touch-control structure and capacitive touch screen and preparation method thereof Download PDFInfo
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- CN105335027B CN105335027B CN201410301250.9A CN201410301250A CN105335027B CN 105335027 B CN105335027 B CN 105335027B CN 201410301250 A CN201410301250 A CN 201410301250A CN 105335027 B CN105335027 B CN 105335027B
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Abstract
The invention discloses a kind of capacitance type touch-control structures, comprising: PET film layer；Transparent optical cement substrate, transparent optical cement substrate fit on PET film layer, and transparent optical cement substrate has viewfinder area and non-viewfinder area；Ink layer, ink layer are set on the non-viewfinder area of transparent optical cement substrate；Transparent to fill and lead up layer, transparent layer of filling and leading up is located on viewfinder area and the ink layer of transparent optical cement substrate, for filling and leading up step caused by ink layer；Electrode layer, electrode layer are formed in transparent fill and lead up on layer.Capacitance type touch-control structure of the invention, have bendable folding endurance, can be bonded with flexible display, meet people increasingly to diversity product the needs of, in addition, the making technology process of the structure is few, manufacturing cost is low, and the yield of production efficiency and product height.The invention also discloses a kind of capacitive touch screens and preparation method thereof.
Description
Technical field
The present invention relates to touch screen technology field, in particular to a kind of capacitance type touch-control structure, and there is the touch-control knot
Capacitive touch screen of structure and preparation method thereof.
Background technique
Touch screen (Touch screen) is also known as " touch screen ", " touch panel ", is a kind of input such as receivable contact
The induction type liquid crystal display device of signal, the haptic feedback system when contacting the graphic button on touch screen, on touch screen
Various connection devices can be driven according to the formula of preprogramming, be substituted for mechanical push button panel, and by liquid crystal
Show that picture produces lively visual and sound effects.Touch screen is most simple at present, side as a kind of newest computer input apparatus
Just, natural a kind of man-machine interaction mode.It imparts multimedia with brand-new looks, is extremely attractive completely new multimedia
Interactive device.
Existing touch screen has resistive touch screen, capacitive touch screen, infrared-type touch screen and ultrasonic surface formula
Touch screen.Wherein, capacitive touch screen is answered extensively because it has many advantages, such as that the service life is long, accuracy is high, volume production feasibility is strong
It uses in each field, so-called capacitive touch screen is exactly a kind of touching for reaching touch control operation purpose using the peculiar electrical characteristics of human body
Touch screen.
Currently, capacitive touch screen includes OGS (One Glass Solution, integrated touch-control) structure, glass adds PET
(Polyethylene Terephthalate, polyethylene terephthalate) membrane structure.But the touching of aforementioned two kinds of structures
It is poor to touch the equal bending of screen, and anti-drop ability is low.So the demand with people increasingly to diversity product, is guaranteeing touch screen
In the case where low cost, touch screen has flexible and stronger anti-drop ability simultaneously, becomes urgent problem.
Summary of the invention
The purpose of the present invention is intended to solve above-mentioned technical problem at least to a certain extent.
For this purpose, the capacitance type touch-control structure has an object of the present invention is to provide a kind of capacitance type touch-control structure
Bendable folding endurance can be bonded with flexible display, meet people increasingly to diversity product the needs of, in addition, the structure processing procedure work
Skill process is few, and manufacturing cost is low, and the yield of production efficiency and product is high.
It is another object of the present invention to propose a kind of capacitive touch screen.
Another object of the present invention is to propose a kind of preparation method of capacitive touch screen.
In order to achieve the above objectives, an aspect of of the present present invention embodiment proposes a kind of capacitance type touch-control structure, which includes
PET film layer；Transparent optical cement substrate, the transparent optical cement substrate fit on the PET film layer, the transparent optical matrix
Plate has viewfinder area and non-viewfinder area；Ink layer, the ink layer be set to the transparent optical cement substrate non-viewfinder area it
On；Transparent to fill and lead up layer, the layer of filling and leading up is located on viewfinder area and the ink layer of the transparent optical cement substrate, for filling out
Put down step caused by the ink layer；Electrode layer, the electrode layer are formed in described transparent fill and lead up on layer.
The capacitance type touch-control structure of the embodiment of the present invention, by the way that transparent optical cement substrate is fitted in PET film layer, so as to
With with wearability and flexibility, after ink layer is arranged in the non-visible area of transparent optical cement substrate and before forming electrode layer,
It fills and leads up layer by transparent and fills and leads up the step that ink layer is formed, can be improved the yields of product, and the embodiment of the present invention
Capacitance type touch-control structure making technology process is few, and production cost is low, and production efficiency can be improved, and can paste with flexible display
It closes, meets the needs of people are to diversification product.
Wherein, in some embodiments of the invention, the PET film layer with a thickness of 145-155 microns, the PET film
The hardness of layer is greater than 9H, and the transparent optical cement substrate thickness is 16.5-17.5 microns.
Wherein, the electrode layer is the graphic structure layer formed by ITO film plating layer or nano-silver layer, the graphic structure layer
With a thickness of 50-2000 Ethylmercurichlorendimide.Further, the electrode layer includes capacitance plate driving structure and induction electrode structure.
In addition, above-mentioned capacitance type touch-control structure further include: electrode protecting layer, the electrode protecting layer are located at the electrode layer
On.
Specifically, the electrode protecting layer be ink protective layer, the ink protective layer with a thickness of 4-6 microns.
By electrode protecting layer can play the role of insulation, disappear shadow and guard electrode, more securely and reliably.
In order to achieve the above objectives, another aspect of the present invention embodiment proposes a kind of capacitive touch screen, the capacitive touch
Touching screen includes above-mentioned capacitance type touch-control structure.
The capacitive touch screen of the embodiment of the present invention, capacitance type touch-control structure through the foregoing embodiment may be implemented soft
Property touch-control shows meet the needs of people are to diversification product, and more wear-resisting, making technology process is few, at low cost.
In order to achieve the above objectives, another aspect of the invention embodiment proposes a kind of preparation method of capacitive touch screen,
The preparation method the following steps are included: A, using half-tone screen printing method transparent optical cement substrate non-viewfinder area printed ink
Layer；B, it is printed on the viewfinder area of the transparent optical cement substrate and the ink layer using half-tone screen printing method and transparent fills and leads up layer
To fill and lead up step caused by the ink layer；C, electrode layer is prepared on layer in transparent fill and lead up；And D, pass through adhesive-layer will
The transparent optical cement substrate fits on PET film layer.
The preparation method of the capacitive touch screen of the embodiment of the present invention, by the way that transparent optical cement substrate is fitted in PET film
On layer, so as to after ink layer is arranged in the non-visible area of transparent optical cement substrate and be formed with wearability and flexibility
Before electrode layer, by print it is transparent fill and lead up layer and fill and lead up the step that ink layer is formed, the yields of product can be improved, and
The making technology process of the preparation method is few, at low cost, and production efficiency can be improved.
Wherein, the D is after the C, alternatively, the D is before the A.
Wherein, the C, specifically includes: sputtering preparation original in transparent fill and lead up on layer using vacuum magnetic-control sputtering method
Beginning electrode layer；Alternatively, the method using screen painting prints the original electrodes layer in transparent fill and lead up on layer；And pass through
The method of etching performs etching to form the electrode layer with graphic structure the original electrodes layer.
Wherein, the A, specifically includes: being printed using half-tone screen printing method in the non-viewfinder area of the transparent optical cement substrate
4-5 microns processed thick ink layer；And the ink layer is toasted by heater, wherein baking temperature 150-180
DEG C, baking time is 10-15 minutes.
In addition, in some embodiments of the invention, it is described it is transparent fill and lead up on layer prepare electrode layer after, further includes:
Electrode protecting layer is prepared on the electrode layer.Wherein, the electrode protecting layer is ink protective layer, the ink protective layer
With a thickness of 4-6 microns.
In addition, by electrode protecting layer can play the role of insulation, disappear shadow and guard electrode, more securely and reliably.
The additional aspect of the present invention and advantage will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the schematic diagram according to the capacitance type touch-control structure of one embodiment of the present of invention；
Fig. 2 is the block diagram according to the capacitive touch screen of another embodiment of the invention；
Fig. 3 is the flow chart of the preparation method of the capacitance touch screen of a specific embodiment according to the present invention；And
Fig. 4 is the flow chart according to the preparation method of the capacitive touch screen of another embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.For letter
Change disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is for purposes of simplicity and clarity, itself not indicate the relationship between discussed various embodiments and/or setting again.This
Outside, the present invention provides various specific techniques and material example, but those of ordinary skill in the art may be aware that
The applicable property of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it
The structure of "upper" may include the embodiment that the first and second features are formed as directly contacting, and also may include other feature shape
At the embodiment between the first and second features, such first and second feature may not be direct contact.
In the description of the present invention, it should be noted that unless otherwise specified and limited, term " installation ", " connected ",
" connection " shall be understood in a broad sense, for example, it may be mechanical connection or electrical connection, the connection being also possible to inside two elements can
, can also indirectly connected through an intermediary, for the ordinary skill in the art to be to be connected directly, it can basis
Concrete condition understands the concrete meaning of above-mentioned term.
Referring to following description and drawings, it will be clear that these and other aspects of the embodiment of the present invention.In these descriptions
In attached drawing, some particular implementations in the embodiment of the present invention are specifically disclosed, to indicate to implement implementation of the invention
Some modes of the principle of example, but it is to be understood that the scope of embodiments of the invention is not limited.On the contrary, of the invention
Embodiment includes all changes, modification and the equivalent fallen within the scope of the spirit and intension of attached claims.
The capacitance type touch-control structure proposed according to embodiments of the present invention is described with reference to the accompanying drawings, and there is the touch-control knot
Capacitive touch screen of structure and preparation method thereof.
Fig. 1 is the schematic diagram according to the capacitance type touch-control structure of one embodiment of the present of invention.As shown in Figure 1, of the invention
The capacitance type touch-control structure 100 of embodiment includes PET film layer 10, transparent optical cement substrate 20, ink layer 30, transparent fills and leads up layer 40
With electrode layer 50.
Wherein, PET film layer 10 can be greater than the PET material of 9H for hardness, can be wear-resisting, bent.PET film layer with a thickness of
145-155 microns, such as the PET material film layer that PET film layer 10 is 150 microns.
Transparent optical cement substrate 20 fits on PET film layer 10, and transparent optical cement substrate 20 has viewfinder area and non-form
Area.Specifically, transparent optical cement substrate 20 can be referred to as OCA (Optically Clear Adhesive, optical cement) substrate,
The thickness of OCA substrate can be 16.5-17.5 microns, such as OCA forms 17 microns of OCA substrate, OCA base by heated baking
Plate has viewfinder area and non-viewfinder area, i.e., the region and shading region of visual rear images.
Further, ink layer 30 is set on the non-viewfinder area of transparent optical cement substrate 20.It specifically, can will be oily
Ink is printed on the non-viewfinder area of transparent optical cement substrate 20 by way of silk-screen printing to carry out shading.The thickness of the ink of printing
Degree can be 4-5 microns, and ink needs to be toasted by heater after printing, wherein baking temperature can be 150-
180 DEG C, baking time can be 10-15 minutes, to form 30th area of ink layer of the black of needs, white or other colors
Domain.
Closer, transparent layer 40 of filling and leading up is located on viewfinder area and the ink layer 30 of transparent optical cement substrate 20,
In, after the non-viewfinder area printing ink layer 30 of transparent optical cement substrate 20, then ink layer 30 and transparent optical cement substrate 20
Viewfinder area formed step, if directly formed electrode layer 50, easily lead to electrode layer 50 formation when it is uneven, increase not
Yield, so layer of transparent is republished on printing the transparent optical cement substrate 20 after ink layer 30 fills and leads up layer 40, it is transparent to fill out
Leveling 40 can be UV material or other transparent materials, for filling and leading up step caused by ink layer 30, reduction fraction defective.
And then print it is transparent fill and lead up layer 40 after, electrode layer 50 is formed in transparent fill and lead up on layer 40.In the present invention
Embodiment in, electrode layer 50 be by ITO (Indium Tin Oxides, nano indium tin metal oxide) film plating layer or nanometer
Silver layer formed graphic structure layer, graphic structure layer with a thickness of 50-2000 Ethylmercurichlorendimide.Wherein, electrode layer 50 drives including capacitance plate
Dynamic structure and induction electrode structure.Specifically, it such as on the OCA substrate 20 by ink printing, then is splashed by small pieces magnetic control
The mode penetrated is coated with ITO material, and then layer of transparent and ito film layer in homogeneous thickness are formed on layer 40 in transparent fill and lead up.Or
Nano silver or other conductive materials are printed by way of screen painting, form one layer of conductive layer.And then laser can be passed through
Machine carries out dry etching on 50 surface of conductive layer to form electrode or electrode pattern.Wherein, laser machine is usually infrared laser machine, wavelength
It is 1064 nanometers.
In addition, above-mentioned capacitance type touch-control structure 100 can also include electrode protecting layer 60, electrode protecting layer 60 is located at electrode
On layer 50.Electrode protecting layer 60 can be ink protective layer, ink protective layer with a thickness of 4-6 microns.For example, being formed conductive
Transparent optical cement substrate 20 after layer 50, it is uniform in its 50 surface printing a layer thickness of conductive layer by way of screen painting
Transparency protected ink, such as the ink that print thickness is 5 microns, to form electrode protecting layer 60, electrode protecting layer 60 has exhausted
The effect of edge, disappear shadow and guard electrode.
And then can by the transparent optical cement substrate 20 after the protective layer 60 that prints electrode by adhesive-layer such as silica gel or
Optical cement is fitted in 9H hardness, with a thickness of on such as 150 microns of PET film layer 10, alternatively, OCA substrate 20 is first fitted in PET
In film layer 10, then above-mentioned subsequent film layer is produced, to form flexible touch-control structure of the overall thickness less than 180 microns.
In conclusion capacitance type touch-control structure according to an embodiment of the present invention, by the way that transparent optical cement substrate is fitted in
On PET film layer, so as to wearability and flexibility, after ink layer is arranged in the non-visible area of transparent optical cement substrate and
It is formed before electrode layer, fills and leads up layer by transparent and fill and lead up the step that ink layer is formed, the yields of product can be improved, and
The making technology process of the capacitance type touch-control structure of the embodiment of the present invention is few, and production cost is low, and production efficiency can be improved, can be with
It is bonded with flexible display, meets the needs of people are to diversification product.In addition, by electrode protecting layer can play insulation,
The effect for shadow and the guard electrode of disappearing, more securely and reliably.
Based on above-mentioned capacitance type touch-control structure, another aspect of the present invention embodiment also proposes a kind of capacitive touch screen.
Fig. 2 is the block diagram according to the capacitive touch screen of one embodiment of the present of invention.As shown in Fig. 2, the present invention is implemented
The capacitance type touch-control structure 100 of the capacitive touch screen 200 including above-described embodiment of example, by by the condenser type of above-described embodiment
Touch-control structure is bonded with flexible display screen, can form the capacitive touch screen 200 of diversification.
Flexible touch-control may be implemented in capacitive touch screen of the invention, capacitance type touch-control structure through the foregoing embodiment
It has been shown that, meets the needs of people are to diversification product, more wear-resisting, making technology process is few, at low cost.
Based on the structure of above-mentioned capacitive touch screen, a kind of capacitive touch screen is proposed from another further aspect embodiment below
Preparation method.
Fig. 3 is the flow chart according to the preparation method of the capacitive touch screen of one embodiment of the present of invention.Such as Fig. 3 institute
Show, the preparation method of the capacitive touch screen of the embodiment of the present invention the following steps are included:
A, using half-tone screen printing method transparent optical cement substrate non-viewfinder area printed ink layer.
Wherein, transparent optical cement substrate can be referred to as OCA (Optically Clear Adhesive, optical cement) base
The thickness of plate, OCA substrate can be 16.5-17.5 microns, such as OCA forms 17 microns of OCA substrate by heated baking,
OCA substrate has viewfinder area and non-viewfinder area, i.e., the region and shading region of visual rear images.
Specifically, 4-5 microns thick can be printed in the non-viewfinder area of transparent optical cement substrate using half-tone screen printing method
Ink layer is to carry out shading；And ink layer is toasted by heater, wherein baking temperature is 150-180 DEG C, baking
Time is 10-15 minutes, to form the ink layer region of the black of needs, white or other colors.
B, use half-tone screen printing method printed on the viewfinder area of transparent optical cement substrate and ink layer it is transparent fill and lead up layer with
Fill and lead up step caused by ink layer.
After the non-viewfinder area printing ink layer of transparent optical cement substrate, then the view of ink layer and transparent optical cement substrate
Window area forms step, if directly forming electrode layer, easilys lead to uneven when electrode layer formation, increase fraction defective, institute
Layer is filled and led up to republish layer of transparent on printing the transparent optical cement substrate after ink layer, transparent layer of filling and leading up can be UV material
Material or other transparent materials reduce fraction defective for filling and leading up step caused by ink layer.
C prepares electrode layer in transparent fill and lead up on layer.
Wherein, electrode layer can be the graphic structure layer formed by ITO film plating layer or nano-silver layer, the thickness of graphic structure layer
Degree is 50-2000 Ethylmercurichlorendimide.Wherein, electrode layer includes capacitance plate driving structure and induction electrode structure.
Specifically, can using vacuum magnetic-control sputtering method it is transparent fill and lead up sputtering on layer and prepare original electrodes layer for example plate
The ITO material of one layer of 1000 Ethylmercurichlorendimide, and then layer of transparent and ito film layer in homogeneous thickness are formed in transparent fill and lead up on layer.Or
Printing original electrodes layer on layer, such as printing nano silver or other conduction materials are filled and led up transparent using the method for screen painting
Material forms a layer original conductive layer.And then original electrodes layer is performed etching by the method for etching to be formed with figure knot
The electrode layer of structure.Such as dry etching is carried out in original conductive layer surface to form electrode or electrode pattern by laser machine.Wherein, swash
Ray machine is usually infrared laser machine, and wavelength is 1064 nanometers.
D is fitted in transparent optical cement substrate on PET film layer by adhesive-layer.
For example, the transparent optical cement substrate after the layer that prints electrode is fitted in by adhesive-layer such as silica gel or optical cement
Hardness is greater than 9H, with a thickness of on such as 150 microns of PET film layer.
In the above-described embodiments, D is after C, i.e., after prepared by all layers, transparent optical cement substrate is pasted
In conjunction and PET film layer, alternatively, as shown in figure 4, D is before A.First OCA substrate is fitted on PET film layer, then carries out A, B
Above-mentioned subsequent film layer is sequentially produced with the process of C.
In addition, in one embodiment of the invention, it is transparent fill and lead up on layer prepare electrode layer after, further includes: in electricity
Electrode protecting layer is prepared on the layer of pole.Wherein, electrode protecting layer can be ink protective layer, ink protective layer with a thickness of 4-6
Micron.For example, forming the transparent optical cement substrate after conductive layer, printed by way of screen painting in its conductive layer surface
The uniform transparency protected ink of a layer thickness, such as the ink that print thickness is 5 microns is to form electrode protecting layer, electrode protection
Layer has the function of that insulation, disappear shadow and guard electrode.
And then the transparent optical cement substrate after the protective layer that prints electrode can be fitted in 9H hardness, with a thickness of for example
On 150 microns of PET film layer, to form flexible touch-control structure of the overall thickness less than 180 microns, and there will be wearability and can
The touch-control structure of bending is bonded with flexible display, can form capacitive touch screen slim, flexible.
The preparation method of capacitive touch screen according to an embodiment of the present invention, by fitting in transparent optical cement substrate
On PET film layer, so as to wearability and flexibility, after ink layer is arranged in the non-visible area of transparent optical cement substrate and
Formed before electrode layer, by print it is transparent fill and lead up layer and fill and lead up the step that ink layer is formed, the yields of product can be improved,
And the making technology process of the preparation method is few, at low cost, and production efficiency can be improved.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the present invention includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system, including the system of processor or other can be held from instruction
The instruction fetch of row system, device or equipment and the system executed instruction) it uses, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium ", which can be, any may include, stores, communicates, propagates or pass
Defeated program is for instruction execution system, device or equipment or the dress used in conjunction with these instruction execution systems, device or equipment
It sets.The more specific example (non-exhaustive list) of computer-readable medium include the following: there is the electricity of one or more wirings
Interconnecting piece (electronic device), portable computer diskette box (magnetic device), random access memory (RAM), read-only memory
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium can even is that the paper that can print described program on it or other are suitable
Medium, because can then be edited, be interpreted or when necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each section of the invention can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, each functional unit in each embodiment of the present invention can integrate in a processing module
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is by appended claims and its equivalent limits.
Claims (8)
1. a kind of capacitance type touch-control structure characterized by comprising
PET film layer；
Transparent optical cement substrate, the transparent optical cement substrate fit on the PET film layer, the transparent optical cement substrate tool
There are viewfinder area and non-viewfinder area；
Ink layer, the ink layer are set on the non-viewfinder area of the transparent optical cement substrate；
Transparent to fill and lead up layer, the transparent layer of filling and leading up is located on viewfinder area and the ink layer of the transparent optical cement substrate,
For filling and leading up step caused by the ink layer；
Electrode layer, the electrode layer are formed in described transparent fill and lead up on layer；
The electrode layer is the graphic structure layer formed by ITO film plating layer or nano-silver layer；
Further include: electrode protecting layer, the electrode protecting layer are located on the electrode layer；The electrode protecting layer is ink guarantor
Sheath, the ink protective layer with a thickness of 4-6 microns；
For the PET film layer with a thickness of 145-155 microns, the hardness of the PET film layer is greater than 9H, and the transparent optical cement substrate is thick
Degree is 16.5-17.5 microns；
The graphic structure layer with a thickness of 50-2000 Ethylmercurichlorendimide；
The electrode layer includes capacitance plate driving structure and induction electrode structure.
2. a kind of capacitive touch screen, which is characterized in that including capacitance type touch-control structure as described in claim 1.
3. a kind of preparation method of capacitive touch screen, which comprises the following steps:
A, using half-tone screen printing method transparent optical cement substrate non-viewfinder area printed ink layer；
B, transparent fill and lead up is printed on the viewfinder area of the transparent optical cement substrate and the ink layer using half-tone screen printing method
Layer is to fill and lead up step caused by the ink layer；
C, electrode layer is prepared on layer in transparent fill and lead up；And
D, the transparent optical cement substrate is fitted on PET film layer by adhesive-layer.
4. the preparation method of capacitive touch screen as claimed in claim 3, which is characterized in that the D after the C, or
Person, the D is before the A.
5. the preparation method of capacitive touch screen as claimed in claim 3, which is characterized in that the A is specifically included:
4-5 microns of thick ink layers are printed in the non-viewfinder area of the transparent optical cement substrate using half-tone screen printing method；And
The ink layer is toasted by heater, wherein baking temperature is 150-180 DEG C, and baking time is 10-15 minutes.
6. the preparation method of capacitive touch screen as claimed in claim 3, which is characterized in that the C is specifically included:
It transparent fill and lead up sputtering on layer described using vacuum magnetic-control sputtering method and prepares original electrodes layer；Or
The original electrodes layer is printed in transparent fill and lead up on layer using the method for screen painting；And
The original electrodes layer is performed etching by the method for etching to form the electrode layer with graphic structure.
7. the preparation method of capacitive touch screen as claimed in claim 3, which is characterized in that described to be made in transparent fill and lead up on layer
After standby electrode layer, further includes:
Electrode protecting layer is prepared on the electrode layer.
8. the preparation method of capacitive touch screen as claimed in claim 7, which is characterized in that the electrode protecting layer is ink
Protective layer, the ink protective layer with a thickness of 4-6 microns.
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| CN105676509A (en) * | 2016-03-25 | 2016-06-15 | 武汉华星光电技术有限公司 | Pressure-touch-control liquid-crystal display panel and manufacturing method thereof |
| CN106775072A (en) * | 2016-12-02 | 2017-05-31 | 东莞市平波电子有限公司 | A kind of capacitive touch screen and preparation method thereof |
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